1128005180 has 12 divisors (see below), whose sum is σ = 2368810920. Its totient is φ = 451202064.

The previous prime is 1128005173. The next prime is 1128005209. The reversal of 1128005180 is 815008211.

It is a super-2 number, since 2×1128005180² = 2544791372213664800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28200110 + ... + 28200149.

It is an arithmetic number, because the mean of its divisors is an integer number (197400910).

Almost surely, 2^1128005180 is an apocalyptic number.

1128005180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128005180 is an abundant number, since it is smaller than the sum of its proper divisors (1240805740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1128005180 is a wasteful number, since it uses less digits than its factorization.

1128005180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56400268 (or 56400266 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 1128005180 is about 33585.7883635326. The cubic root of 1128005180 is about 1040.9671661166.

The spelling of 1128005180 in words is "one billion, one hundred twenty-eight million, five thousand, one hundred eighty".